Bicyclic intermediates for preparing 16-alkylated prostaglandin analogs

ABSTRACT

Prostaglandin-type compounds with one or two fluoro substituents at the C-16 position are disclosed, with processes for making them. These compounds are useful for a variety of pharmacological purposes, including anti-ulcer, inhibition of platelet aggregation, increase of nasal patency, labor inducement at term, and wound healing.

The present application is a division of Ser. No. 381,155, filed July 20, 1973, now abandoned, which is a continuation-in-part of Ser. No. 248,013, filed Apr. 27, 1972, now abandoned.

The present invention relates to bicyclic lactone intermediates used in the preparation of prostaglandin analogs. The essential material constituting disclosure of the present invention is incorporated here by reference from U.S. Pat. No. 3,962,293. 

I claim
 1. An optically active compound of the formula ##STR1## or a racemic compound of that formula and the mirror image thereof, WHEREIN C_(n) H_(2n) is alkylene of one to 9 carbon atoms, inclusive, with one to 6 carbon atoms, inclusive, in the chain between --CFR₂ -- in the terminal methyl;Wherein M^(XIV) is ##STR2## wherein R₇ is hydrogen or alkyl of one to 4 carbon atoms, inclusive, and R₅₉ is alkyl of one to 4 carbon atoms, inclusive, or on acetal or ketal blocking group; Wherein R₂ is hydrogen, methyl, ethyl, or fluoro; Wherein R₁₀ is an acetal or ketal blocking group; and Wherein an acetal or ketal blocking group is any acetal or ketal group which initially replaces the hydrogen of an hydroxyl group; which thereafter is not attacked by, nor as reactive as the hydrogen of the hydroxy to the reagents used in the preparation of prostaglandin-type products; and which ultimately is replaceable by hydrogen in the preparation of prostaglandin-type products.
 2. A compound according to claim 1, wherein M^(XIV) is ##STR3##
 3. A compound according to claim 2, wherein R₇ is hydrogen.
 4. A compound according to claim 3, wherein R₅₉ is an acetal or ketal blocking group.
 5. A compound according to claim 4, wherein C_(n) H_(2n) has 3 carbon atoms in the chain between --CFR₂ -- and a terminal methyl.
 6. A compound according to claim 5, wherein R₂ is hydrogen.
 7. 3α,5α-Dihydroxy-2β-[3α-hydroxy-(4S)- and (4R)-4-fluoro-trans-1-octenyl]-1α-cyclopentaneacetic acid γ lactone, 3,3'-bis-(tetrahydropyranyl ether), compounds according to claim 6 wherein the acetal or ketal blocking group is tetrahydropyranyl.
 8. A compound according to claim 7, wherein R₂ is fluoro.
 9. 3α,5α-Dihydroxy-2β-(3α-hydroxy-4,4-difluoro-trans-1-octenyl)-1α-cyclopentaneacetic acid γ lactone, 3,3'-bis-(tetrahydropyranyl ether), a compound according to claim 8, wherein the acetal or ketal blocking group is tetrahydropyranyl.
 10. An optically active compound of the formula ##STR4## or a racemic compound of that formula and the mirror image thereof, wherein C_(n) H_(2n) is alkylene of one to 9 carbon atoms, inclusive, with one to 6 carbon atoms, inclusive, in the chain between --CFR₂ -- and the terminal methyl;wherein M^(III) is ##STR5## wherein R₇ and R₈ are hydrogen or alkyl of one to 4 carbon atoms, inclusive, being the same or different; and wherein R₂ is hydrogen, methyl, ethyl, or fluoro.
 11. A compound according to claim 10, wherein C_(n) H_(2n) has 3 carbon atoms in the chain between --CFR₂ -- and the terminal methyl.
 12. A compound according to claim 11, wherein R₂ is hydrogen.
 13. 3α,5α-Dihydroxy-2γ-[3α-hydroxy-(4S)- and (4R)-4-fluoro-trans-1-octenyl]-1α-cyclopentaneacetic acid γ lactone, compounds according to claim
 12. 14. A compound according to claim 11, wherein R₂ is fluoro.
 15. 3α,5α-Dihydroxy-2β-(3α-hydroxy-4,4-difluoro-trans-1-octenyl)-1α-cyclopentaneacetic acid γ lactone, a compound according to claim
 14. 